Gets or sets the index of the currently selected drop-down item. Setting -1 deselects the current selected drop-down item. If the RibbonListViewItemDropDown.ShowCheckMargin property is set to true, the corresponding item of the drop-down menu is checked when it is opened . If the RibbonListViewItemDropDown.ShowText property is set to true, setting this property updates the RibbonListViewItemDropDown.Text property with the text of the corresponding RibbonListViewItemDropDown.SelectedItem property value. The default value is -1.


public int SelectedIndex { get; set; }
Public Property SelectedIndex() As Integer


A System.IndexOutOfRangeException is thrown if the set value is less than -1 or larger than or equals to the number of drop-down items.